Improvement in bran-duster for flour-mills



tntrd gitarre gerarchia.

JOHN E.. WEAVER, OF NETI-IER PROVIDENCE TOWNSHIP, PENN- SYL-VANIA.

Leners Patent No. 95,293, dated samba 2s, 1809.

.IMPROVEMENT nr 'ERAN-nus'ren ro noun-MILLS.

Mr-. y

The Schedule referred tn :in theseLetters Patent and making part cf the same.

brushes, and fan, and a vertical section of the other parts of the machine. v Figure 2, a perspective of' the brush-cone, brushes, and fan, enlarged and detached. v

Figure 3, in perspective, a modification of the fan, enlarged. l

'My improvements are designed to e'ect a draught yof the Amaterials to be acted upon by the machine,

from the top toward the bottom of the brush-cone, and thus to bring into efficient action the whole brushlsurface of the wire cloth.

nection with brushes so arranged, of a fan, placed be-l low the brushes,'in the chamber enclosed by the wire cloth.

In fig. l, a represents the frame of the machine.

b, the brush-cone.

c, the shaft which passes through and-rotates said cone, the lower end of which shaft'bears upon the adjustable step d. I i

The brushes e are arranged on said cone at an angle of, say, from ten to twelve degrees from the plane ot'vshaft c;

f represents the wire cloth, which is'fastened to a frame consisting of upper .and lower rims, g and h, and connecting-ribs t', the latter being in sufficient number to hold the wire cloth to its position.

k, figs. l and2, is the fan, which is attached to the shaft c by set-screws.

I prefer to give as many plates or leaves, m, to the fan as there are brushes-eip`loyed, and to set the" leaves so that they correspond with the angle. of the brushes.

The leaves mare each provided with a slot, n, through which, by means ofset-screws, the lower ends of the brushes respectively are secured in position.

The brushes, at their upper-ends, are attached to the slotted 'lugs 1J by set-screws, as shown in figs. 1

and 2.

q q, fig. l, are sweeps, by which the our, brushed through the wire cloth f, is caused to run down the y exit-spout fr.. s Y

vs is the Apulley by which power-is applied to shaft c.

Instead of attaching the fan as represented -in igs. l and 2, I prefer, however, to attach itin the manner represented in fig. 3, wherein tand @represent two rings, which slide on shaft c, to which they are vsecured by set-screws.

Each ring is -provided with arms @,towh'ich thev y fan-leaves are attached by set-screws, which pass through slots in the fan-leaves, as shown,A

The fan-leaves are providedwith other slots, w, for

the set-screws by which thelower ends of the brushes are secured. y This method of constructing the fan facilitates the adjustment of the brushes, when' itis desired tochange their draught, that is to say, thefangle ot their inclination to the shaft.

I prefer to use four brushes in a machine intended to dust the bran produced Aby two sets of stones, and six brushes in a machine intended for four sets of stones.. s

The frame of the machine may be six and a half feet high by two and a half feet square, the cone sixteen inches in diameter atthe larger end, vand six inches at the lower or smaller end; the fan six inches in' depth..

The bran to be dusted drops down,through spou z, on the top plate y of the.cone, and is thrown to the periphery of said plate by centrifugal force, and passes down between the brushes and the wire' cloth, being impelled by the draught of the brushes, and drawn by the partialvacuum formed at the bottom 'of the cone, by the action of the fan.

lHaving thus described my invention,

I claim, and desire to secure by Letters Patent- The brushes herein described, when arranged upon the cone, at an angle with the line'of the shaft, as

and-for the purposes specified.

JOHN E. WEAVER. Witnesses:

RUFUs M. INGRAM, WM. BURNS. 

